RESEARCH ARTICLE


Comparison of the Mechanical Properties of Temporary Abutments Made of Polyetheretherketone and Photopolymeric Resin



Maria -Alejandra Barragán-Paredes1, Isabella Mosquera-Victoria1, Carlos Alberto Viveros-Rebolledo1, Martha Lucia Rodríguez-Paz1, Mario Fernando Muñoz-Velez2, Carlos Humberto Valencia - Llano1, *
1 School of Dentistry, Universidad del Valle, Calle 4B No 36-00 Cali, Colombia
2 Grupo Materiales e Ingeniería Sísmica, Pontificia Universidad Javeriana, Calle 18 No 118-250, 76001 Cali, Colombia


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Creative Commons License
© 2021 Barragán-Paredes et al.

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: https://creativecommons.org/licenses/by/4.0/legalcode. This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

* Address correspondence to this author at School of Dentistry, Universidad del Valle, Calle 4B No 36-00 Cali, Colombia;
E-mail: humberto.valencia@correounivalle.edu.co


Abstract

Background:

Provisional abutments are widely used in the rehabilitation of dental implants as it allows the use of a provisional crown in order to restore patient aesthetics while the final restoration is being carried out; most of the temporary abutments available on the market are made of titanium alloygrade V (type Ti-6Al-4Va) and polyetheretherketone (PEEK), a material that exhibits very low adhesion to polymethylmethacrylate (PMMA).

Objective:

This research is aimed to compare the mechanical properties of commercially available PEEK abutments and abutments made using an additive technique with photopolymeric resin.

Methods:

Eighteen commercial temporary abutments manufactured in PEEK and eighteen experimental abutments manufactured by 3D printing using photopolymeric resin were used. The two groups of abutments were subjected to compression, bending and adhesion tests using six abutments of each type by test. Statistical analysis was performed with STATA 14 software. The data were analyzed by means of the Wilcoxon Mann-Whitney test, as these were two independent samples of reduced size. Values ​​lower than (p <0.05) were considered statistically significant in all tests and rejected the null hypothesis of equality between the group medians.

Conclusion:

The results indicate that it is possible to make abutments with good mechanical properties in photopolymeric resin (CLEAR FLGP04) using additive techniques to be used as temporary abutments.

Keywords: Provisional abutment, PEEK abutment, Provisional rehabilitation, Implant rehabilitation, Photopolymeric resin, Tooth loss.